Watermark PDF
Stamp a text watermark across every PDF page with your own opacity and angle.
Private: your file is processed in your browser and never uploaded.
Watermark a PDF privately
Stamp text such as CONFIDENTIAL, DRAFT, or a company name across every page of a PDF. Adjust the opacity, size, and angle so the mark is clear without hiding the content, then download the result, all in your browser.
Because the file is processed locally, it is never uploaded, which matters for contracts, proposals, and internal drafts. Most online watermark tools send your document to a server first.
Getting the look right
A low opacity with a diagonal angle reads as a classic background stamp, while a higher opacity makes a bold notice. The watermark is centered on each page and drawn into the page content.
Frequently Asked Questions
Does watermarking upload my PDF?
No. The watermark is drawn in your browser with a local library, so the file never leaves your device.
Can I control how visible the watermark is?
Yes. Set the opacity from faint to strong, the size, and the angle so it reads as a diagonal stamp or a subtle mark.
Is the watermark on every page?
Yes. The same text is stamped across all pages so the whole document is marked.
Can the watermark be removed later?
It is drawn into the page content, so it is not a simple toggle. Keep an unmarked original if you may need a clean copy.
Private, in-browser PDF utilities that never upload your files.